diff --git a/gui/gui_main.py b/gui/gui_main.py
index 9edcdbcca..d3c3176b4 100644
--- a/gui/gui_main.py
+++ b/gui/gui_main.py
@@ -1482,7 +1482,7 @@ class wx_python_gui:
         if utilities.download_file(link, self.constants.installer_pkg_zip_path):
             if Path(self.constants.installer_pkg_path).exists():
                 subprocess.run(["rm", self.constants.installer_pkg_path])
-            subprocess.run(["unzip", "-o", self.constants.installer_pkg_zip_path, "-d", self.constants.installer_pkg_path])
+            subprocess.run(["ditto", "-V", "-x", "-k", "--sequesterRsrc", "--rsrc", self.constants.installer_pkg_zip_path, self.constants.payload_path])
 
     def install_installer_pkg(self, disk):
         disk = disk + "s2" # ESP sits at 1, and we know macOS will have created the main partition at 2